Beginner Superior Mesenteric Plexus Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Around which artery is the superior mesenteric plexus primarily organized?
- Inferior epigastric artery
- External iliac artery
- Superior mesenteric artery
- Inferior mesenteric artery
Q2. Which embryologic gastrointestinal territory is most closely associated with the superior mesenteric plexus?
- Pelvic floor only
- Foregut only
- Midgut
- Hindgut only
Q3. Which sympathetic ganglion is closely associated with the superior mesenteric plexus?
- Superior mesenteric ganglion
- Geniculate ganglion
- Otic ganglion
- Ciliary ganglion
Q4. Which parasympathetic nerve provides fibers to the midgut through autonomic plexuses associated with the superior mesenteric artery?
- Pudendal nerve
- Obturator nerve
- Vagus nerve
- Femoral nerve
Q5. Do vagal parasympathetic fibers normally synapse in the superior mesenteric ganglion?
- No, because the vagus does not reach the abdomen
- Yes, all vagal fibers synapse there
- Yes, because it is a parasympathetic ganglion
- No, they continue toward terminal or intramural ganglia
Q6. How do many postganglionic sympathetic fibers reach midgut organs from the superior mesenteric plexus?
- Through the brachial plexus
- Along periarterial plexuses
- Through posterior rami only
- Through the femoral nerve
Q7. Which intestinal segment receives autonomic fibers through branches of the superior mesenteric plexus?
- Distal rectum
- Jejunum
- Sigmoid colon
- Descending colon
Q8. Which part of the large intestine is within the midgut territory supplied through the superior mesenteric plexus?
- Anal canal below the pectinate line
- Sigmoid colon
- Descending colon
- Ascending colon
Q9. What is a common effect of sympathetic activity on midgut motility?
- Decreased motility
- Voluntary contraction of the bowel
- Marked increase in peristalsis
- No effect on smooth muscle
Q10. Which type of sensory fibers can pass through the superior mesenteric plexus from abdominal viscera?
- Special sensory fibers for vision
- Branchial motor fibers
- Visceral afferent fibers
- Somatic motor fibers to quadriceps